The Bently Nevada 330102-00-20-30-12-CN serves as the primary 330102 Proximity Probe utilized to execute non-contacting vibration and displacement measurement across 3300 XL Machinery Protection Systems platforms. The transducer handles dynamic shaft tracking through high-frequency radio-frequency induction, translating the physical gap variations between the 8 mm probe tip and the target surface into continuous analog voltage shifts for machinery monitoring instrumentation.

Hardware Options Matrix

• 330102: 3300 XL 8 mm Proximity Probe, 3/8-24 UNF thread, smooth case with coaxial armor

• -00: Unthreaded length option (0.0 inches)

• -20: Overall case length option (2.0 inches)

• -30: Total length option (3.0 meters / 9.8 feet)

• -12: Connector and boot option (Miniature coaxial ClickLoc connector with connector protector and fluid-resistant boot)

• -CN: Agency approval option (China Ex certification for hazardous area deployments)

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Calibration

The mechanical configuration of the 8 mm tip governs the eddy-current probe scaling mechanics across the 80 mil tracking envelope. Field setup mandates a formal gap voltage validation routine, adjusting the physical position until the static output registers a -10 VDC target baseline to position the transducer at the midpoint of its linear slope. When arranged in multi-probe layouts tracking complex rotor dynamics, the units rely on geometric separation to achieve cross-talk suppression. Parallel installations require enforcing a minimum center-to-center clearance distance of 40 mm to insulate neighboring high-frequency radio-frequency fields from mutual inductive distortion.

Component Kit Inventory

• 1 x Bently Nevada 330102-00-20-30-12-CN Armored Proximity Probe

• 1 x Fluid-Resistant Boot Assembly with Coaxial Connector Protector

• 2 x 3/8-24 UNF Hex Lock Jam Nuts

• 1 x NEPSI / China Ex Hazardous Area Conformity Certificate

Field Installation Guidelines

Mechanical integration requires matching unthreaded and total case depth metrics against housing dimensions prior to installation.

1. Inspect the 3/8-24 UNF tapped mounting port. Thread the armored probe body into the channel manually to confirm clean thread tracking over the 2.0-inch case length.

2. Direct the 3.0-meter integral armored cable toward the local junction box, verifying that the flexible stainless steel armor does not pinch or kink along radius bends.

3. Hook up a digital multimeter to the Proximitor monitor out terminals. Adjust the probe depth relative to the target shaft until reaching gap voltage validation at -10.0 VDC.

4. Torque the provided hex locknuts to a limit of 4.5 N-m (40 in-lb). Do not over-torque to prevent casing deformation or internal coil separation.

5. Terminate the coaxial terminal inside the junction box housing. Ensure the outer coaxial shield layer remains fully isolated from local machinery ground plates to eliminate single-point loop noise errors.

Shipping Package Handling

Delivery time: 2-7 days when payment finish, with transport managed via premium DHL, FEDEX, or UPS courier networks. Packaging protocols mandate sealing the armored line and sensor head inside specialized anti-static industrial packaging alongside custom-molded foam inserts to preserve dimensional tracking profiles and factory calibration integrity under transit.

Transducer Operation FAQ

Q: Can the 3.0-meter integral probe cable be coupled directly to the 3500 monitor rack terminal block?

A: No. The probe is a passive sensor element that requires a matched electrical length to maintain correct impedance. It must connect to a 3300 XL Proximitor Sensor through a 3300 XL extension cable. The combined electrical length must total exactly 5.0 meters or 9.0 meters depending on the specific model option chosen for the Proximitor.

Q: Is this specific probe variant hot-swappable at the Proximitor terminal interface while live?

A: Yes. Uncoupling the ClickLoc coaxial connector while the loop is under -24 VDC power will not damage the hardware components. However, breaking this connection forces the associated monitoring channel into an instantaneous NOT OK fault condition, which can trip downstream interlocks if voting logic is not bypassed.

Q: What is the mechanical benefit of the factory-installed coaxial armor sleeve?

A: The stainless steel flexible armor provides physical protection against sharp mechanical edges, abrasive debris, and flying particles within the machine casing. It preserves the integrity of the inner FEP cable jacket without affecting the electrical behavior or calibration of the internal coaxial transmission line.